Finding the Fourth Proportional to 39,988,930.34, 55,184,710.42 and 21,654,215.84
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Solution
The fourth proportional to 39,988,930.34, 55,184,710.42 and 21,654,215.84 is: 29,882,810.57
Step by Step Solution
- Step 1: Write the proportion equation
39,988,930.34 : 55,184,710.42 = 21,654,215.84 : x - Step 2: Convert to fraction form
39,988,930.34/55,184,710.42 = 21,654,215.84/x - Step 3: Cross multiply
39,988,930.34x = 55,184,710.42 × 21,654,215.84 - Step 4: Simplify right side
39,988,930.34x = 1,194,981,630,118,382.50 - Step 5: Solve for x
x = 1,194,981,630,118,382.50/39,988,930.34 - Step 6: Final answer
x = 29,882,810.57
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.